After some experiments with ESP32, ESP32-S3, i still try to send 24 bits parallel. With LCD Mode it doesn´t work (16 bit only). I have a array filled with 50.000 of 24bit values Now i see 2 things that can work: - Sending the Data over SPI to shift registers. The speed is fast enough...but if i send...

My Problem is, i dont want to use it for LCD Data. I want to send 24bit Data, read from a File, to a Hardware that reads 2x12Bit parallel data stream. With ESP32 it works perfekt. There only problem is there are not 24 GPIOs. So i think i to to a ESP32-S2, which has enough PINS...but ESP32-S2 has on...

Hello,

i need a 24 Bit parallel Data Stream. With ESP32 and the I2S Module i cant generate a 24 Bit Stream, but the ESP32 has not enough pins.
Now with the ESP32-S3 i have enough pins, but i can only generate a 16 Bit Stream with the LCD Module. But why? Is there any hardware limitation?

No. With the ESP32 it works without any problems. The only problem, there are not enough pins

Now it works...16 Bit parallel data out with the LCD Module. But why i cant have 24-bit or 32-bit?
Or why i2s (there is 24 and 32 bit) has not the LCD (parallel) Mode anymore?

It works...there was wrong settings in menuconfig

the answer:

I think the declaration is ok and i get no error. But if i write data on it it crashed.

With ESP_LOGI (TAG, "heap_caps_get_free_size: %d\n", heap_caps_get_free_size(MALLOC_CAP_SPIRAM);
i get a size of 0. I dont know whats wrong.

uint32_t *data = heap_caps_malloc(50000*(sizeof(uint32_t)),MALLOC_CAP_SPIRAM);

With this i get a "Store probihited" error. Is there a example to allocate the PSRAM?

Have i to enable "Support for external, SPI-connected RAM"? Its on my ESP32-S3 board